I’ll argue that front-end developers need to master four different skills.

Empathy

Code

Design

Communication

Front-End Developers, having learnt HTML, CSS and JS, are forced to take functionality into account when creating user experiences or making sure that the two disciplines work as one from a development perspective. They become all-rounders, having to understand what is actually happening between the AJAX data and the PHP file that’s sending off a mail or returning errors.

In my opinion, what defines a good front-end developer is one that has skilled knowledge of HTML, CSS, JS with a vast understanding of User design thinking as they'll be building web interfaces with accessibility in mind. They should also be excited to learn, as the world of Front-End Development keeps evolving. The ability to stay in the loop is critical.

I tried to illustrate some of the issues I remember, from wrong font sizes to spacing to alignment. There was a lot more issues, but you get the point. To the developer this was fine because he was more concerned about the functionality and JS behind this and visually he believed it was “close enough”. Unfortunately, for this client (and any client IMO) would equally care for the aesthetics. This individual was extremely talented in JS builds and development but visuals and CSS weren’t his strength. On the flip side, I also worked with individuals who are truly amazing CSS developers but aren’t heavily invested in deep JS work.